The Philadelphia Flower Show — the largest such indoor event in the world — winds up this weekend. Two-hundred sixty-five thousand visitors are expected to have attended by the time the show closes on Sunday. The Philadelphia show started in 1829 and now covers 33 acres. The show now under way features the horticultural heritage of Great Britain, famous for roses and gardening. In the U.S., close to 70 percent of households take part in some form of gardening. To aid them, across America there are over 12,000 flower, nursery stock and supply wholesalers sustaining the country’s flower shops and garden centers. You can find more facts about America from the U.S. Census Bureau, online at <www.census.gov>.